Overview
Mistral Medium 3.1, released on August 21, 2025, is Mistral AI's latest frontier-class multimodal model. It represents the pinnacle of Mistral's current model lineup, offering significant improvements in performance, tone, and multimodal capabilities. This model supersedes the previous flagship, Mistral Large 2, and is positioned as a top-tier competitor to other leading models on the market.
Capabilities
Mistral Medium 3.1 is designed for high-performance, sophisticated tasks:
- Frontier-Class Performance: Delivers state-of-the-art results across a wide range of benchmarks, excelling in complex reasoning and understanding.
- Advanced Multimodality: As a native multimodal model, it can process and interpret various data types beyond text, such as images.
- Improved Tone and Nuance: The model has been refined to provide more natural and context-aware responses.
- Developer-Focused Features: Continues to support robust function calling and JSON mode for reliable application development.
Technical Specifications
- Model size: While the exact parameter count isn't public, it is a large-scale, frontier-class model.
- Context window: 128K tokens.
- API Endpoint:
mistral-medium-2508 - Architecture: A highly optimized Transformer architecture.
Use Cases
Mistral Medium 3.1 is a powerful, general-purpose model ideal for a wide range of applications:
- Complex Enterprise Workflows: Automating sophisticated business processes that require nuanced understanding and reasoning.
- Advanced R&D: Assisting researchers and scientists with data analysis and discovery.
- High-Quality Content Creation: Generating creative and technical content with a refined tone.
- Multimodal Applications: Building applications that can understand and reason about both text and images.
Limitations
- Proprietary Model: Mistral Medium 3.1 is a commercial, proprietary model available only through API access.
- Knowledge Cutoff: The model's knowledge is static and based on its training data, without access to real-time information.
Pricing & Access
Mistral Medium 3.1 is available as a premium commercial offering:
- API Access: Available via Mistral AI's own "La Plateforme".
- Cloud Partners: Integrated into major cloud platforms like Microsoft Azure AI.
Ecosystem & Tools
- La Plateforme: The official hub for Mistral AI's API and developer resources.
- Microsoft Azure AI: A key cloud partner providing access to the model.
- SDKs: Official Python and JavaScript SDKs are available for developers.